In the real world, **Jeon Jungkook**, the golden maknae of **BTS**, is living his life as a successful idol.

But like every other fan, he occasionally indulges in fanfiction, curious to see how others imagine the world of BTS.

One day, as he’s scrolling through his social media, he stumbles upon a fan-made book titled, **"The Heart’s Betrayal: A Taekook Tragedy."** Intrigued by the title, which clearly indicates it’s a **Taekook** (Jungkook x Taehyung) story, Jungkook decides to give it a read.

However, as he flips through the pages, **Jungkook’s anger rises**.

In the fanfic, **Taehyung** and **Suga** (known as **Taegi**) don’t get a happy ending.

Instead, **Jungkook** is portrayed as a villain, responsible for the destruction of Taehyung and Suga’s relationship.

**Jimin**, the so-called villainess, is the one who **marries Suga** in the end. Jungkook’s frustration boils over, especially since the story paints him as the cause of all the misery and heartache.

To make matters worse, the story concludes with **Jungkook** marrying **Taehyung**—but it's not a happy ending.

**Taehyung** is miserable, trapped in a relationship with Jungkook, who in the book is cruel, possessive, and manipulative. The injustice of it all infuriates Jungkook. He feels that the portrayal of his character is **completely wrong**, and the way Jimin’s character is written only **adds to his hatred** for the entire book.

Jungkook, unable to contain his frustration, **leaves a scathing review**. He harshly criticizes the book, especially the ending, calling it **"unrealistic"** and **"unfair"** to the characters.

He also adds **hate comments** about how much he **hates** the ending of the book, particularly how **Jimin** marries **Suga** while he himself is stuck with a miserable **Taehyung**.

The next morning, Jungkook wakes up to find something impossible—**he's in the book**. The world around him has shifted, and he’s no longer the **idol Jungkook** from BTS but the **villainous Jungkook** of the story, the one who destroyed everything.

He realizes that the very world he was reading about the night before is **his new reality**.

With no clear idea of how or why this has happened, Jungkook is determined to change the story, starting with **Taegi**.

He refuses to let the **tragic ending** unfold, especially not the part where **Taehyung** and **Suga** are torn apart because of him & so called villainess **Park Jimin**.

**Jungkook’s mission is clear**—he will do whatever it takes to make sure Taehyung and Suga have their **happy ending**.

But as Jungkook works behind the scenes to **fix the future**, he starts to realize something unexpected—he can’t stop thinking about **Park Jimin**.

Jimin, the **villainess** of the book, who in this reality is **strong-willed** and **determined** to marry **Suga**, begins to **intrigue** Jungkook.

The more he interacts with Jimin, the more he sees beyond his villainous exterior. **Jimin is kind**, **intelligent**, and someone who, despite everything, seems to have a **heart of gold**.

The more Jungkook tries to change the storyline, the more his feelings toward **Jimin deepen**.

He realizes that Jimin is not the **villain** everyone thinks he is.

His actions, while seen as selfish in the story, are actually rooted in **love** and **loyalty**. Jungkook starts to question his own feelings and what he wants out of this world.

The more he tries to **redeem Taegi**, the more he feels an undeniable **pull** toward **Jimin**, the man he once hated.

As Jungkook begins to **fall for Jimin**, he must now balance his mission to **save Taehyung and Suga’s love** while navigating his growing feelings for **Jimin**.

The book world is a strange and unpredictable place, and Jungkook’s interference starts to **change the fates** of everyone around him.

Will **Jungkook** be able to **rewrite** the story and make **Taegi** happy, or will his **new feelings for Jimin** derail everything? As the villain of the story, **Jungkook** must confront his own role in this twisted world and decide whether **to continue fighting for Taehyung’s happiness** or **follow his heart** to the **villainess** he never expected to fall for.

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#### **Ending:**

In the end, **Jungkook realizes that the true villain of the story was never really him**—it was the **misunderstanding** of love, the **wrong choices** made in the past.

He **helps Taehyung and Suga find their happiness**, but not in the way the book originally dictated. **Suga and Taehyung** have their **happy ending**, but **Jungkook** doesn’t feel resentful anymore.

Instead, he finds his own happiness in the **most unexpected place**—with **Jimin**, the villainess turned heroine.

The story concludes with **Jungkook and Jimin** starting a new life together, breaking free from the roles they were initially given and **writing their own ending**.

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